# Relationship history for MSHA mine 2602687

Current hierarchy: **James  Barkley; David  Lewis → Valley Excavating LLC → Nick Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Valley Excavating LLC → Nick Mine; 2010-09-21 to 2023-09-17; source msha-controller-operator-history
- **controller_controls_mine:** David  Karnes et al → Nick Mine; 2010-09-21 to 2012-03-20; source msha-controller-operator-history
- **controller_controls_operator:** David  Karnes et al → Valley Excavating LLC; 2010-09-21 to 2012-03-20; source msha-controller-operator-history
- **controller_controls_operator:** James  Karnes et al → Valley Excavating LLC; 2010-09-21 to 2012-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Matthew  Freeny → Nick Mine; 2012-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  Freeny → Valley Excavating LLC; 2012-03-21 to 2023-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Valley Excavating LLC → Nick Mine; 2023-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Barkley et al → Nick Mine; 2023-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Barkley et al → Valley Excavating LLC; 2023-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Lewis et al → Valley Excavating LLC; 2023-09-18 to current/open; source msha-controller-operator-history